Need another one...

SELECT * FROM gallery2 WHERE topic_id="647418" UNION SELECT * FROM gallery2 WHERE topic_id="866991" UNION SELECT * FROM gallery2 WHERE topic_id="735347" UNION SELECT * FROM gallery2 WHERE topic_id="1130214" UNION SELECT * FROM gallery2 WHERE topic_id="491471" UNION SELECT * FROM gallery2 WHERE topic_id="557260" UNION SELECT * FROM gallery2 WHERE topic_id="1190194" UNION SELECT * FROM gallery2 WHERE topic_id="1513315" UNION SELECT * FROM gallery2 WHERE topic_id="1267620" UNION SELECT * FROM gallery2 WHERE topic_id="580730" UNION SELECT * FROM gallery2 WHERE topic_id="20181" UNION SELECT * FROM gallery2 WHERE topic_id="1817135" UNION SELECT * FROM gallery2 WHERE topic_id="1667149" UNION SELECT * FROM gallery2 WHERE topic_id="1761951" UNION SELECT * FROM gallery2 WHERE topic_id="1562998" UNION SELECT * FROM gallery2 WHERE topic_id="881528"